Lock



Patented ay 15, 1923.

NED

IPIOTR KONIDRAD, F WILKES-BARRE, PENNSYLVANIA.

LOCK.

Application filed June 7, 1922. Serial No. 566,503.

- To all whom it may concern: I Be it known that I, Piorn KoNDnAD, a citizen of Poland, residing at Wilkes-Barre, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Locks,of which the following is a specification.

This invention relates to locks, having more particular reference to a key-controlled of buildings, or of boxes or other receptacles, or for other purposes.

The invention has for an object to provide a novel and simplified lock which will not be easily picked.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the follow ing description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

Fig. 1 of the drawings is a face view of a lock constructed according to my invention, the face plate of the lock casing being removed.

Fig. 2 is a transverse vertical sectional view of the lock, taken on the line 22 of Fig. 1. 1

As here embodied my improved lock comprises a shallow rectangular block 10 which forms the main body of thelock casing and which is covered on one side by a removable face-plate 11.

Extending across the face of this block from side to side thereof are two vertically spaced horizontal grooves and 16 respec tively, the upper groove 15 being adapted to receive the key, and the lower groove having a bolt 17 slidable therein, the bolt having a projecting knob or handle 17 These grooves are covered by the face plate of the lock.

Formed also in the face of the block are a series of vertical grooves 20 which are un evenly spaced across the block, these grooves opening at their lower ends into .the bolt groove 16, and intersecting and extending above the key groove 15 at their upper ends.

In these grooves 20 are slidably mounted a number of tumbler bars 22 which normally rest at their lower ends in notches 23 in the top side of the bolt 16. These tumbler bars 22 have their front faces recessed as at 25, these recesses being complementary to the key groove 15 and being located a short dislock adapted for application to the doors tance below the upper ends of the tumbler bars, leaving top elements 22 on the latter which overhang the groove 15.

j The key comprises a shank 30 and a handle 3i and is formed on its upper side with a number of bit projections 32 which are adapted to engage the said overhanging elements 22 on the tumbler bars to lift the latter from the notches 23 in the bolt 17. These projections 32 are spaced along the key in correspondence to the spacing of the vertical grooves 20 and are adapted to register with the tumbler bars when the key is inserted to its limit in the look.

In the lock as here embodied a pin 35 is fixed in the upper part of the groove 15, near the side of the look from which the key is inserted, and is adapted to be engaged by a hooked projection 36 on the top side of the key to form a fulcrum on which the key pivots when raising the tumbler bars 22, the latter projecting into the bolt 17 distances varying in correspondence with their distance from the key fulcrum.

In connection with v the tumbler bar farthest from the pin 35 I provide a device which again locks the bolt if the said tumbler bar is lifted further than is necessary to clear the bolt. This device comprises a latch element 37, pivoted between its ends as at 38 in a recess 39 in the block 10 above and adj acent the bolt 17, and having one end downturned as at 37 and adapted to engage in a socket 410 in the bolt and its opposite end projecting into a slot 41 in the tumbler bar. This latch 37 is held with its end 37 just clear of the sock t 40 by means of a spring 42 hearing on a pin 4C3 fixed thereto and pressing it against a limiting stud 4.4: on the block. In this position the other end of the latch 37 is spaced above the bottom of the slot ll a distance equal to the depth of engagement of the tumbler bar in the bolt, so that as soon as the tumbler bar clears the bolt it will engage the latch 37 and move its end 37 into the socket 40.

It is believed that the manner of use and operation of my improved lock will be readily understood from the above description. When the bolt 17 is to be retracted, the key shank is inserted into the grove 15 until its hooked finger 36 engages over the pin 35. The key handle 31 is then pressed downwardly, throwing the shank 30 upwardly and moving the tumbler bars 22 upward until theyare clear of the bolt 17 which may then be drawn back. It will be undrestood of coulrse that the upward movement ot'the'key shank will be limited by its striking the top wall of the groove 15, or any other suitable abutment, attheproper point. The lock is shown in Fig. 2 as attached to a door 50 by means of bolts 51 passing through flanges 10 on the block 10, the face plate 11, and through the door, and having nuts 52 screwed on their inner ends. T11 bolt 17 is adapted to be engaged in an ordinary keep element, not shown.

While I have illustrated anddescribed a preferred embodiment of my invention it is to be understood that I do not limit myself to the precise construction disclosed, and that various changes and modifications might ,be made therein Without departing from the spirt and scope of the invention as definedkin the appended claims.

Having thus described my invention what I claimas new and desireto protect by Letters Patent of the United States is as follows:

1.: Ina lock a casing element, a bolt slidable in said casing element and having a notch and a socket formed therein, a vertical mb er] ha t res n in" sa d notch, a d a latch pivoted in the said casing element and adapted to engage the said socket whenthe ltun liler bar is lifted. dt'or' distance clear of the bolt.

In a lock a casing element, a bolt s1idable in sa'idcasingelement and having a notch and a socket formed therein, a vertical tumbler bar resting in said notch, and a latch pivoted in the 4 said. casing element and adapted to engage the said socket when the tumbler bar is lifted for a distance clear of the bolt, said latch having an arm engaging in a vertical slot in said tumbler bar to form an operative connection between the latter and the latch.

11 a 1 5 a cas ng lemen a bo sli able in said casing element and having a notch and a socket,formedfthereinfa vertical tumbler bar resting in said :notch, a latch pivoted in the saidcasing and havingbne d engaging n a verti lo in. thesa d tumbler bar, and its oppositeenddowhturned toward the-said socket, a spring pressing said downturned end away fromsaid socket,

and a stop member holdingsaid downturned end just clear of said socket.

In te timony Wh lTQ l'have af ed my signature.

mora-ise vlmn 

